Vintage Silver Ingot Pendant

This is a topic I've noticed has become quite popular recently so I thought I'd just quickly share a picture of the one little 5g .9998 Fine Silver pendant that's been knocking about amongst my cufflinks for as long as I care to remember. I haven't been able to find out much about it as yet so if anyone sees this & can share a little knowledge, that'd be great. As pictured, on one side it's "Zodiac Themed" & displays the word "Libra" in a stylized font across the bottom & above that the symbol associated with the Libran Starsign; The Scales. On the other (more interesting) side it features the following text: CRAGSIDE (within a diamond pattern represented by the "<>") 5g .9998 Fine Silver. The ingot itself weighs 5grams, it also has a sterling silver bail (from which to hang it from a necklace). Any & all information gratefully recieved. Thanks.